Updated translation doesn't work on Mac

Hello there,

Big question about an issue on Mac.

I translate in french the WonderfulWhims mod from Turbodriver. 

Due to the last Sims update, the mod was updated too with some new strings to translated.

I translated it, saved it as a new .package and it WORKS on Windows but not on Macintosh.

Is anyone know this issue and can help me with that ? I don't even know what I can do to solve it but it turns me mad 😭

Info :

- I did the initial translation on Mac with Sims4Studio, last year

- I did the translation on Windows (cause not a single app exists on Mac for that) with The Sims 4 Translator by Voky on MTS

- Last time I solved this issue by changing the name of the file, but it doesn't work anymore